Kev xaiv tsis raug ntawm cov khoom siv lub tog raj kheej ntawm kev nthuav dav sib koom ua ke ntawm cov ceg rov qab ntawm CFB boiler, tsis txaus tshwj xeeb nthuav dav, daim ntawv tsis tsim nyog, ib daim ntawv thauj tog rau nkoj, thiab lwm yam, ua rau muaj qhov tsis xws luag.refractory castablecov ntaub ntawv, kev puas tsuaj ntau zaus, thiab txawm tias rov qab los ntawm cov khoom siv Cov tshwm sim ntawm liab kub ntawm lub tog raj kheej kheej kheej thiab carbonization tsis ua hauj lwm ntawm cov khoom cuam tshuam rau lub lag luam ntawm lub tsev, txo cov kev cia siab ntawm kev ua hauj lwm ntawm chav tsev, thiab ncaj qha cuam tshuam rau kev lag luam ntawm lub boiler. .
(1) Lub tog raj kheej sab hauv ntawm thawj qhov kev nthuav dav yog ua los ntawm 16Mn steel, thiab kev ua haujlwm kub yog -20 txog 475 degree . Kev khiav hauj lwm kub ntawm cov ceg rov qab yog 800 mus rau 900 degree, uas yog siab tshaj qhov kev khiav hauj lwm kub ntawm 16Mn steel. Nws tsis tuaj yeem hloov mus rau qhov chaw ua haujlwm thiab cov khoom siv ua haujlwm kub dhau sijhawm ntev. Thaum kawg nws yuav dhau los ua carbonized thiab ua tsis tiav.
(2) Qhov tshwj xeeb nthuav dav qhov sib txawv ntawm lub tog raj kheej sab hauv thiab lub tog raj kheej sab nrauv tsis txaus, thiab qhov kev nthuav dav tsawg ua rau lub zos deformation ntawm qhov sib koom ua ke, ua rau cov khoom siv refractory castable poob.
(3) Cov khoom qub refractory tau txais kev txhawb nqa los ntawm ib lub voj voog. Thaum lub annular bracket thermally expands, nws yog restrained los ntawm lub puab lub tog raj kheej thiab deforms downwards. Cov khoom siv refractory tsis tuaj yeem txhawb nqa tau zoo thiab thaum kawg poob.
(4) Tus thawj thauj tog rau nkoj yog Y pins, uas yog teem staggered txhua txhua 150 hli. Tsis muaj hlau mesh ntawm qhov kawg ntawm cov pins, yog li cov ntaub ntawv refractory tsis tuaj yeem tsim tag nrho. Qhov tsis ua haujlwm ntawm tus pins yuav ua rau cov ntaub ntawv refractory hauv zos kom xoob, thiab tsis muaj kev sib txuas ntawm cov khoom siv refractory nyob ib sab. Tiv tauj, thaum kawg poob.
2. Kev daws rau qhov poob ntawm lub refractory castables thiab hnav-resistant khoom ntawm expansion sib koom ua ke ntawm boiler rov qab ceg
1. Hloov cov khoom siv sab hauv lub tog raj kheej ntawm kev sib koom ua ke nrog 1Cr18Ni9Ti, tawm ntawm 50mm expansion pub, thiab weld lub refractory bracket. Cov hlau phaj taub qab vuam yuav tsum tau grooved ntawm 30 degree, thiab vuam pas nrig qauv A302 nrog ib txoj kab uas hla ntawm 3.2 hli yog siv. Lub vuam tam sim no yog 90 ~ 110A kom ntseeg tau tias muaj kev nkag mus rau hauv cov thickness ntawm cov khoom. Cov khoom siv refractory bracket tau hloov pauv los ntawm cov duab annular mus rau kev sib cais kev txhawb nqa ntawm 150mm × 200mm × 12mm steel daim hlau. Cov khoom siv hlau phaj yog 1Cr18Ni9Ti thiab ntxiv dag zog nrog daim duab peb sab ntawm tib cov khoom. Qhov no tsis tsuas yog zam kev ntxhov siab loj deformation los ntawm thermal expansion ntawm annular phaj, tab sis kuj zoo txhawb cov ntaub ntawv refractory; Lub bracket fillet welds yog tag nrho cov welded, thiab vuam ceg qhov siab yog 10 hli.
2. Cov khoom siv thauj tog rau nkoj yog 310S. Ua kom raug 10mm × 300mm pins, npaj lawv staggered txhua 100mm, tag nrho weld cov hauv paus hniav, thiab weld 100mm × 100mm steel daim phiaj ntawm qhov kawg. Khaws 3 hli labyrinth expansion pob qij txha txhua 500 hli kom tau raws li qhov xav tau ntawm cov khoom siv refractory. Expanding xav tau. Lub vuam pas nrig yog A402 qauv, vuam tam sim no yog 90 ~ 110A, vuam seam kev taw qhia yog tag nrho, thauj tog rau nkoj vuam yuav tsum ruaj, yuav tsum tsis txhob muaj kab nrib pleb thiab slag inclusions, thiab nws yuav tsum tau perpendicular mus rau lub phaj phaj. Qhov saum npoo yuav tsum tau pleev xim nrog 1 ~ 2 hli tuab asphalt xim thiab cam khwb cia nrog thermal rwb thaiv tsev. Ua ntej siv cov khoom siv, ob txheej ntawm 20mm aluminium silicate fiber boards yog muab tso rau ntawm lub rooj tsavxwm, nrog staggered seams nruab nrab ntawm cov khaubncaws sab nraud povtseg. Thaum tsim cov insulating castables, phau ntawv nteg txoj kev yog siv. Thaum lub sij hawm tsim kho, lub thickness yuav tsum yog 148mm ib zaug. Tsis txhob tsim nyob rau hauv txheej. Siv cov cuab yeej tshwj xeeb rau kev cog lus thiab tom qab ntawd calender, thiab coj mus rhaub thiab cog cov pob qij txha nyob ib puag ncig. Weld 100mm × 100mm steel mesh ntawm qhov tseeb 6mm thiab 310S cov khoom siv los txhim kho kev txhim kho ntawm hnav-resistant castables. Tag nrho cov ntsia hlau yuav tsum tau pleev xim rau asphalt xim ua ntej siv yas.
3. Kev tsim kho nrog hnav-resistant yas refractory castables. Tom qab cov yas tau muab tso rau ntawm cov khoom siv, siv lub rauj ntoo lossis roj hmab rauj kom nruj. Cov pob qij txha ntawm cov blocks yuav tsum tau pounded thiab compacted kom cov pob qij txha nruj, thiab cov chaw yuav tsum tau calendered thiab flattened. Cov pob qij txha ntawm qhov chaw tsim kho thiab cov phab ntsa qub yuav tsum xyuas kom muaj kev hloov pauv thiab yuav tsum tsis txhob concave lossis protruding. Siv aluminium silicate fiberboard soaked nyob rau hauv txhuas phosphate tov los kaw cov expansion pob qij txha kom tsis txhob muaj cua channeling thaum lub sij hawm boiler ua hauj lwm, uas tej zaum yuav ua rau hlawv puas tsuaj rau lub non-metallic compensator.
